package com.guolibbs.servlet;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.guolibbs.vo.Topic;
import com.guolibbs.vo.User;

/**
 * Servlet implementation class Post
 */
public class Post extends HttpServlet {
	private static final long serialVersionUID = 1L;
	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	@SuppressWarnings("unchecked")
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		User user = (User) request.getSession().getAttribute("user");
		if(user==null){
			System.out.println("user=null");
			request.setAttribute("err","请登录...");
			request.getRequestDispatcher("WEB-INF/jsp/login.jsp").forward(request, response);
		}else{
			String title = request.getParameter("p_title");
			String content = request.getParameter("p_content");
			List<Topic> topicList = (List<Topic>) this.getServletContext().getAttribute("topics");
			if(topicList==null){
				topicList=new ArrayList<Topic>();
				this.getServletContext().setAttribute("topics", topicList);
			}
			Topic topic = new Topic();
			topic.setTopicName(title);
			topic.setContent(content);
			topic.setPoster(user);
			topic.setPostTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
			topicList.add(topic);
			response.sendRedirect(this.getServletContext().getContextPath()+"/WlbbsServlet");
		}
	}
}
